Studies on Electrochemical Property of LiFePO4/C as Cathode Material for Lithium Ion Batteries

Chemical Research in Chinese Universities ›› 2006, Vol. 22 ›› Issue (1): 73-75.

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Studies on Electrochemical Property of LiFePO₄/C as Cathode Material for Lithium Ion Batteries

HUANG Xiao-wen^1,2, SHI Peng-fei¹

1. Faculty of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, P.R. China;
2. College of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266510, P.R. China

Received:2005-04-11 Online:2006-02-24 Published:2011-08-06
Supported by:
Supported by Natural Science Foundation of Jilin Province(No. 20000133).

Abstract

Abstract: LiFePO₄/C samples were prepared at different temperatures by adding sugar to the synthetic precursor. The samples were characterized by X-ray diffraction(XRD). Their crystal phases show an olivine structure. Only the sample obtained at 700 ℃ has a larger discharge capacity, which has good electrochemical properties: its discharge specific capacity is 120.3 mAh/g at a current of 0.05 mA, and its capacity fade is very low after 20 cycles. It is demonstrated that the best synthetic temperature should be 700 ℃.

Key words: Olivine, Lithium ion battery, Carbon-coated LiFePO₄

HUANG Xiao-wen, SHI Peng-fei. Studies on Electrochemical Property of LiFePO₄/C as Cathode Material for Lithium Ion Batteries[J]. Chemical Research in Chinese Universities, 2006, 22(1): 73-75.

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Studies on Electrochemical Property of LiFePO₄/C as Cathode Material for Lithium Ion Batteries

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